No problem, we've got 8638 and 5278 to multiply
8638 × 5278 = 5278 × (8638)
+ 5278 × 8 giving us 42224
+ 5278 × 30 that results in 158340
+ 5278 × 600 what gives us 3166800
+ 5278 × 8000 what gives us 42224000

= 45591364
